Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48ec7593f9f29cbec1119975227b97831688ff4ee4f9784d8a51700dec9c3033' 
  AND token = 'gWoYy2TCk53XwfWmdPn7iMmiD88Up5vSID+vvbnr8pw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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