Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee657614f047a9a43fadbba86c2e95e5389b133126dffd96ebd51a7ac3f0c35e' 
  AND token = 'y1aW1TQ8H9SL3NQheJRlSF2rvPfEuIQCB8KUa6400YY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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