Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd4d8bc6df629c7e61bef7553766df374563b1dd3325cd824614f0c9ca480feaf' 
  AND token = 'hGXUy75mhQQhP0F4J48x98MjQZT+ltl2rYxtthmTRxA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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