Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afc3b05cfd104c3f58635760dd32842f41bfc7c8659d56bf86fdac1bd36b3cd0' 
  AND token = 'jpDHumIfzx40HwvuXHyMavFvAKW/h1rgoX54DiOr9lc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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