Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '64cffb4525151e1989574c7cceb6d0373ef6de0f0de69d22f05c216e442efbb5' 
  AND token = '7JcFwYja2UyCZtYAUnRhCSev/S1gOmpwdtm6VPgSswo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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