Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f32b7e1a637d7f8b1504dbfcb973e6f71a07ad2ca4e3c5352032eed2df3fad8' 
  AND token = 'BxXCyng0SCGfEsw22bJY+pgA1FOPHF4WnJ0tkcKLOrc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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