Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72f177dde3eb079aa40dff289f58e44835cb1b05744f92b274496b3a77d3f4f5' 
  AND token = 'NO0T51aD1Pe1Y02qgDgkT/AZhqN1eq5dPEr3PP4Oo+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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