Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc48e94ed3c2db5a76251b5649577251b014b227e1901344a320556e9252f129' 
  AND token = 'HeIDKNXFBt1mB2/3VODFC9lSNZ13Vb+8JEXe6v6N8y8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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