Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e95fb0bff8562e6077cde11e832c4fbc6837b704e08cc807055600c1f3f7436' 
  AND token = 'Xvza086xyINXP4iXsnLiUla/yG8PjgcsbbdPWIJ7ajE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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