SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '25c858c223dae43e85280e157f49fb6e9ab6639a5ccaa6aca683f9ede39078a0' 
  AND token = 'Hj5Zaz4Qet2Eqv7rRYnAgRUu+nC/cnpIoFBrsiq2hnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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