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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '431312638a0843e3d843bfbdb4ba4eee57072525268d4e423b16f32faf75bc0d' 
  AND token = 'X1gZRTmZtOrasS5MllRQjb/itv3c2/Y/vZ9vTp8bPjs=' 
  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"
    }
  }
}