Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e072959d1838517362d21f09f5037278503fadba63ff4a1f41192d15cbaa3fb' 
  AND token = 'XabC6NRuGq+VOjY+E1v+4X5dSUNKthwH5Eb14F8k5jU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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