Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '92c2031dddde2bfec34bb6a852fb7ffc66ebb9f67285595ee1c6052745741809' 
  AND token = 'aXTgS6/XbiR244tVVEeUxpM+bmSHEjGac3A+V19gnNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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