Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e747604185f3b49ed3529261e32d656a01c75804982610cee04578d11583a8e' 
  AND token = 'W3VkMvOWsouK/TxQwC/q3wlMvmmNqgErmbodR1+FItU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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