Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ddcf0f0136196367b8f95a1de5e25564d46096a11d02a6d4cf87cbfe9aac58e' 
  AND token = '07lAJbsDjctgTR0qOkhlx8Fs1/q4B8xxXJX3D7IHRUM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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