Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd0f37820d5c143dbb5ee527786c30ab8f3972223b7836f69fd3d4fedc43f33e9' 
  AND token = 'ODUINVDrwb9DwEp9eEAi6xrnMs0hgv0DG7DsEq2BCR4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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