Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00369b78cc001330f1e22ff87cc10ecb584b3e3b6ab08f2daed7c32e8ee9bc40' 
  AND token = 'Yq8fEYmKEfFBKm8Y4Ybh4NBcPhY0d8V8+Fk30pZS6VI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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