Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bda89ce372adf0e987a11bdadcad5921318d7594e13142ab9874d991cec6032f' 
  AND token = 'A+wn7S7tA39Z0h0Pr8EGi7S6B3ReA0kP1u2dk0WRggA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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