Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2463e66418ffaa4a3bfbc86f2b59eb190474f198f45131b0026f7eb316f7411' 
  AND token = 'EFAh9mgDNjstDiEusajrkx6iD8m1tMvM+NFFrPj7ALU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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