Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa72fc6bdb43b7c5f047be132502ff10fce246bd9f5550d0bf4ff1dd2f3b26be' 
  AND token = 'g6kccX0URszWEkRQnRik6T6obwASwn2odhtmguVuSgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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