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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7d422d061e4ea83e24e6dc4662116b4ce0db2debcbb61d0469a58619f80ac58d' 
  AND token = '//u7rS1YWN0KiuI4t7Osm21CZqt9FlwDlR/ZtjtSmOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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