Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bed90eb9942728a730a26d73d5b30287a54f90da852005573fba9b2aee629db9' 
  AND token = 'pNynjRYUR+mQvASuxAuQ6hBCCIbgmpAeNgOHHEQDRyY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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