Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1052d02c0143d7fa2d46a6599620ba4aff508ce143b29357293d6d48654b2784' 
  AND token = 'icrzZMRXzI0RFei+mHSr2i7ztpPz3RWY8Uzo4ywjG6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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