Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7ca49153544060065a96400ae1f6faffda2f04a5865f204786b9e5bc773c5fa' 
  AND token = 'tMA9jnYubeHayOptv6tAK4U6C5XfUvBhwmbWVVUaG/I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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