SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d6f905d490b16e5332d252973fcc591bdafeabd6048819363672fd0c99f8df3' 
  AND token = 'FKIBINhyOInE3yHuzPha9RJ/mWCjQfiXc7Jvj8ZPbTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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