Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17f4c949539aa79bb46de00dc9db8da77485ad3d36105247128a19986f2936dd' 
  AND token = 'M7hzWeG4bE5ueRijO1H312bXMyaBrE3F5VX89igfN5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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