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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba228ede2c0aa63725a8a582e4296b1c8cdb0d3e7e2389d7b3f6c0b97c9d38a8' 
  AND token = 'b2/lT/63Tz+G5DRGXcBhBVKUe+xIsmv/pU1PkC4bhoA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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