Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '007468356a2357bc273f946649253585367c70babcc999313edf315f30a5f9e1' 
  AND token = 'E4R9mBgvCNWEspIZG2boOEZnuVhskf5WhuEinMHNMes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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