Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d3b5feb6172c0e183285b2758b8671971fc5902a67129f2ebaa95b6642d1f09' 
  AND token = '+pRNuMGm6in21bQcxtvqiNuf55jmJnTTtiVPTyxH47Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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