Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3897be89a0b723cddd007ec6dc63e684693e12cf0eaca4889cd6a5f81cbcb360' 
  AND token = 'xRIKWHEr0XviItgmwecfX1h3/qmll+0t0fzYvoYzAx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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