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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'a54c6a5970f870027d29c23679e616f05c0506efc69ff2831dec25fa98f35737' 
  AND token = 'bcVSbye3CZjE3YgYpjxFtjo3c1Tns+VCVBEiuZ3DW1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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