Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd020610edb6f25990a3d09684fb7266d9707283ae6f8814ac290edfefaa69c59' 
  AND token = 'gtqmqqpfr/VS0bwukIPwUX34raFXPWXpQm8ML0T8C4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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