Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4386560736636043c23cf37bda543cc7bd2de828cf10a5f59ade1edbca50ea6e' 
  AND token = 'YVQK/fm9tfNdfcplvKer6+mB9EEzTHjI1O3Fj/4WCZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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