Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '046650ab90a47084eb8cc71fc7b397901cf01a7136965f6789b4d652fbd568c7' 
  AND token = 'irc8Kf9nrFlZAKJx67zkCyEFEWwI1T3WoMPvBrNNKkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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