Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22ddb5c89976a9e9026cccbc69a52223f777ef1ab98da5d2de119bf141e3cb79' 
  AND token = 'hMzIGg5DqfbXsXgDSVmY4eyMcxAMcy7dqUp/bEKROIo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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