Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6ede2b04a1beaed7f1f91b9d53cc61401f7beec40724187e1cb7e6520d9ea087' 
  AND token = 'OH7OBV7ED7+CjofpbGuPLrLWyov2pCuksN0+IGVoFnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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