Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b24580c73e1995fdfd41e410a5a91012ba2270944da0b956475145893db8ceb1' 
  AND token = 'Pp8ZuiWYmEJawgKpS77kZ9vXVghcfc1PT7qukDE2pCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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