Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3730b9193a5d1fbe27b5a87651ac6dcabf50519ab12512a4c5538b277317f091' 
  AND token = 'Kojlmv0T6vjMDKX8iP2qggXDrRAZaEPRB1b5vHU3teE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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