Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7020448ab7e7aab895f18ec49ff4653bca4109e2a1a0bc203f2c9d96aff03b6b' 
  AND token = 'a1TskiUHBJIuR3nWAV1uEppNagmX3ROoO0Hb6b//EBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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