Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3006ef3e6b5ae7304d5161f604b7f9b361e7edc4bbf777d2c3e30079be480ff2' 
  AND token = 'AFV9sQyDP2KJm9Ng5SF9Kr30jS5E8uQrDVWMO67JpoA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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