Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '580c11b305eacdfb699a9bca2fb3c0c8902f7db967d78ddb925ffe4726e6dd3e' 
  AND token = 'MZLhFdvML2gXEbBWk2QupmpvDFs029C0rkAtpLpCyA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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