Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d1414a639f6ec27b07e0cd865f3c05abdeeb45c8052624654eb7a583cbaa9ba' 
  AND token = 'yOSctjpqAoJ/aXG6K0uy1zbznIjrv26re5QdMGH+diw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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