Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce45e198fa981e711dc7e54fcc69225af4a3a6bf67e373304842f57f28c17a2a' 
  AND token = 'Iotira9s4sr+VT4RkEfN1Th4hQE513MKkdZlk1VP9Ak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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