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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32d868104aa9d88f193a905ce8a2ef1f553c9b5fb15e67d4fb6afac609071547' 
  AND token = '+7o6g13T6g114SnCQyT374vsee7U8CQykj+bte/bo9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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