Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8898a9baab56bcdda15a50363b3f21f66c4b66af914b9483d2e37d267396e6b9' 
  AND token = 'lLD8Ws4UG+mhAUGM469oYPLSvUqvhoo+2xpebwZYSas=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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