Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa67995519e6ff8710249f21ecfc7295de657b8158ef167c8c3f0505f202f909' 
  AND token = 'AGC2ClFYOGqMJqT2oGrVGkFXc1jJeT3X3nPFQpCkCWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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