Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffd877ff1456bd775917f047ea521fcc2b4baa92297d5052d508ac221d466ba3' 
  AND token = 'Q32T4+iwMqSiUC9g4RJA5CnDoVQSoHbRyZ65pt0HJT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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