Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6824a4b65f7998854263abdea891df9c11f04137569aa7fe25fd2a7c74bb704c' 
  AND token = 'sM9P0fl/j4NE1NA7Mm9UtjsBW7NxqASuyEHDYJnybK0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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