Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f5efc1f3964c30ba7435e71cd1048c8826b2d7f2c79ef0cd59a23d50b51faa6' 
  AND token = 'zIzuphRAr88VS1cVs1bV1J9Kb7M/J7ufBy5VFrIi4yY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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