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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '985669f29e3d952c8dbcd84bfbd90c07f55243fa015fd4d9cff36829facc4cd3' 
  AND token = 'k0M8kbwECLpKQT4b25YVPlOnR70ikNuc1B+lZQYRKlU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00080

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}