Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '69eccc93119f27699b5656b2e147f061f7d3c6e65d7d2c773be6aecbe855d67c' 
  AND token = 'XjRmgxjJ3W4Ldsca27+5scMYdmx4aS7Igo64/CHfCwA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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