Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e4cedaa1693ce7477f751f6ba6e2b7dec1dda2fa5cd7b40b7bcf441138b3b8e' 
  AND token = 'yoDmTrc1/i7eYHNiVoasVFzGZ28yXbXJ8YLOM+KLxWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}