SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '009a49251b8b68dcf5b2ada0b8e7412e04aaefcef245dd32ed5e91ff7b47e13a' 
  AND token = 'JzprCsGrwDvHqhKPE07oqprRSSAFxVIZcEgCmuwl1Xo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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