Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9a2be7ffd8e4022013b3c8a4dfd8a1c2cbdc12578216a2609479b012f8290306' 
  AND token = 'AYGKIL90UV7OhW9fnUeRsTawQQp6xlQe498W0kt2WLM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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