Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87c46f0a84d0b76a29f6a6291ea0e90721f8087e1be2f2762197489074a06e69' 
  AND token = 'J3VHiSTGtohQenwC0ruxaPRicsIGVbKwnaQ7m3iuXz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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