Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '918fb27926967e557b688ab34d4a3838e4825c18ecf000fa61aa1328b55cfdd2' 
  AND token = '8FfkUoFXSNlVOouGDEQde3qI1Z2iNLEqxLX4See+6KE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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