Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77e31639b0dfe51ec311294ea8a14f39022e70538455fbfafcab6598d407c846' 
  AND token = 'foDqWeIsB/icnff+/yTLpDpDKWdM0D/R14pDw9NCStQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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