Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0422fd710e3869a02c98dcce1cbc86f7c4dd6db95db1584b614705faf0631db0' 
  AND token = 'LK0kT7NB6D6yWDreQPHheHCzlNGnqT6Vz4FAslJTYE4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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