Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2f124ce150aa0b72f8261b3fa50f7221eb9be96b03d8a0fbd57a93b0f3f95e3' 
  AND token = 'w4ZP4L0xZoxhFyShwPQ9c8FWh07GQ6BGq0f876pjNdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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