Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62c401013dfd2d9ae81924b4a0c7d79187f2065dc0116c1922b825fecb5058ca' 
  AND token = 'jEb3e3o816bDzFrtE6nw0zvXRcJao9ZKiJLcXSfXSDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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