Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8683a4a408f8d3cd972fa7839a6ac26c7937ae83c79cb5136514acbd7aebf984' 
  AND token = 'Wct0X+2YLBuwPZnoEJLVcndYQRLC5e6dVNS+JVW8yh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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