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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e96a6465b35dd075010e3d11f05b3c0941d000123a2e5bd5dbc7f91b6ac437cc' 
  AND token = '0ij8acREp4A4B3AKcCnB/PLTyACVwsxsm0t9ygNgzu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}