Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bbab4e180ee7882603c1d934ce66541a020995adddd7ece3feb0b235526ef5a' 
  AND token = 'PWu1RC7eaTJkJsESUFRcGbm4Ftn3VWF+tozNsMQV/qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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