Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9e051bb55386fd429e3caab2d5d3e2c931bbc05d2c863afb0e0de4f162a0ea55' 
  AND token = '+q6uWyTSGDTZeCKgNoe4SSL1vJ9uTn96kwsZWlWCsyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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