Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '127e01ae5b0a1c65953615ab75472f997f955bd7978621a6792522e9c73a2c8a' 
  AND token = 'PTn0a6Bpsq+D7O1CqnHmkXsZuoTduEWnfPLLgfnXPds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}