Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95774cb00dc1ecd4ab2c88eb1e38d2d91dac2a0f2715aa19889ca740c75e84d3' 
  AND token = 'lOSIAlfJw5gMdfDY8r39llVHJFS6Mz0Kul6TjoVi/34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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