Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feba7a3ab55550684b9c88f61ad100c0982eaddc015385d478c6e47acf41e376' 
  AND token = 'Z92dKG7X3HEU/CUddyMTX9QzhkJrloKv462K5Oebsks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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