Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25f3a30dbc1fc2b7426f0d0589bc31f5e046d0c962f4ae888db681b2d079c1a2' 
  AND token = 'Qxd3gjjAjnAtbfoRGHU6uJUROBdJseGwninntWxMYFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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