Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae0e393bf18d2eb46a3cf4eec5826dd6feeffdf50385646503376059480fcd3d' 
  AND token = 'mDf7r+pg44gstkGTIyG+zcWzRihuC6sHZbK3pd7cVUs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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