Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'df15942b9a6cc957f9571c66cef22fe1abe1dadfcf7ba84cb607ce6b1acff307' 
  AND token = 'BLDg2lb4rMIWdiVg5JXquRotTgkA1ykLVsG1Ljv8anA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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