Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ee237808d0fb3241d7917a494651d313019e3b17198fb3783a5570e6cdffc9d' 
  AND token = 'q7y57elfpN3auJSCS3wgNP5c/+Dugjk9xHTOeCccm+Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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