Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1c6ad53635f644dd3360755516c9d24e5543b5700337ade68d00db45a34cd790' 
  AND token = 'j25H2NHDDd5xojcGKUOuSBwCGt3T3Ae4PamKTJ9ifDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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