Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4faf636afa8f68776a14e194a374abd362b20fc4165b36f64b0f28519ac3d0dd' 
  AND token = 'DknS14maUNoKbC0/XOReskrn02Cf982ZW+1AWrdOTC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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