SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd86ab6717545c83d883be42ed5d0cf7ff110d8fd4440a1935b56fa452cb04566' 
  AND token = 'EmBGhMBiTON99WD5BL/MwcPXVD7Q1FeO4A57Jtt6jhY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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