Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e936c040c2ace428a9ddcdbbbf8bcaf0c693aaaca45b5299ea532c0b3ebb316a' 
  AND token = '8qJvKohFs6aHkVRCKznG9gU6bdYzsl/IN7PaXApWQ+I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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