Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4367edced8eb8d2dd18fe3e8f80587a8fa7084103054e22c2c13899454b7b074' 
  AND token = '1UyfHQxcA8og7zn9YoXG2kAz48IX+afJ1Wp6WS7QizU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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