Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c67b5350a74c7ae1a605d344c2fef7ba606c74eaf2fd9aeb69ce7ac6b184353' 
  AND token = 'sXh003IviMteg4Fzl/SsUz86BmH9F7sabxs/ipbe37g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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