Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85780be8ee9d0dad730d1a45e809cd248f4362d452e03976c0c9565c1418b28b' 
  AND token = 'xqomflRTLQYDpTCdAmDuHBCof+bpVbs+zMojqda+9Cg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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